#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations

import json
from unittest import mock

import pytest

from airflow.exceptions import AirflowException
from airflow.models import Connection
from airflow.providers.microsoft.azure.hooks.batch import AzureBatchHook
from airflow.providers.microsoft.azure.operators.batch import AzureBatchOperator
from airflow.utils import db

TASK_ID = "MyDag"
BATCH_POOL_ID = "MyPool"
BATCH_JOB_ID = "MyJob"
BATCH_TASK_ID = "MyTask"
BATCH_VM_SIZE = "Standard"
FORMULA = """$curTime = time();
             $workHours = $curTime.hour >= 8 && $curTime.hour < 18;
             $isWeekday = $curTime.weekday >= 1 && $curTime.weekday <= 5;
             $isWorkingWeekdayHour = $workHours && $isWeekday;
             $TargetDedicated = $isWorkingWeekdayHour ? 20:10;"""


class TestAzureBatchOperator:
    # set up the test environment
    @mock.patch("airflow.providers.microsoft.azure.hooks.batch.AzureBatchHook")
    @mock.patch("airflow.providers.microsoft.azure.hooks.batch.BatchServiceClient")
    def setup_method(self, method, mock_batch, mock_hook):
        # set up the test variable
        self.test_vm_conn_id = "test_azure_batch_vm2"
        self.test_cloud_conn_id = "test_azure_batch_cloud2"
        self.test_account_name = "test_account_name"
        self.test_account_key = "test_account_key"
        self.test_account_url = "http://test-endpoint:29000"
        self.test_vm_size = "test-vm-size"
        self.test_vm_publisher = "test.vm.publisher"
        self.test_vm_offer = "test.vm.offer"
        self.test_vm_sku = "test-sku"
        self.test_cloud_os_family = "test-family"
        self.test_cloud_os_version = "test-version"
        self.test_node_agent_sku = "test-node-agent-sku"

        # connect with vm configuration
        db.merge_conn(
            Connection(
                conn_id=self.test_vm_conn_id,
                conn_type="azure_batch",
                extra=json.dumps({"extra__azure_batch__account_url": self.test_account_url}),
            )
        )
        # connect with cloud service
        db.merge_conn(
            Connection(
                conn_id=self.test_cloud_conn_id,
                conn_type="azure_batch",
                extra=json.dumps({"extra__azure_batch__account_url": self.test_account_url}),
            )
        )
        self.operator = AzureBatchOperator(
            task_id=TASK_ID,
            batch_pool_id=BATCH_POOL_ID,
            batch_pool_vm_size=BATCH_VM_SIZE,
            batch_job_id=BATCH_JOB_ID,
            batch_task_id=BATCH_TASK_ID,
            vm_publisher=self.test_vm_publisher,
            vm_offer=self.test_vm_offer,
            vm_sku=self.test_vm_sku,
            vm_node_agent_sku_id=self.test_node_agent_sku,
            sku_starts_with=self.test_vm_sku,
            batch_task_command_line="echo hello",
            azure_batch_conn_id=self.test_vm_conn_id,
            target_dedicated_nodes=1,
            timeout=2,
        )
        self.operator2_pass = AzureBatchOperator(
            task_id=TASK_ID,
            batch_pool_id=BATCH_POOL_ID,
            batch_pool_vm_size=BATCH_VM_SIZE,
            batch_job_id=BATCH_JOB_ID,
            batch_task_id=BATCH_TASK_ID,
            vm_node_agent_sku_id=self.test_node_agent_sku,
            os_family="4",
            batch_task_command_line="echo hello",
            azure_batch_conn_id=self.test_vm_conn_id,
            enable_auto_scale=True,
            auto_scale_formula=FORMULA,
            timeout=2,
        )
        self.operator2_no_formula = AzureBatchOperator(
            task_id=TASK_ID,
            batch_pool_id=BATCH_POOL_ID,
            batch_pool_vm_size=BATCH_VM_SIZE,
            batch_job_id=BATCH_JOB_ID,
            batch_task_id=BATCH_TASK_ID,
            vm_node_agent_sku_id=self.test_node_agent_sku,
            os_family="4",
            batch_task_command_line="echo hello",
            azure_batch_conn_id=self.test_vm_conn_id,
            enable_auto_scale=True,
            timeout=2,
        )
        self.operator_fail = AzureBatchOperator(
            task_id=TASK_ID,
            batch_pool_id=BATCH_POOL_ID,
            batch_pool_vm_size=BATCH_VM_SIZE,
            batch_job_id=BATCH_JOB_ID,
            batch_task_id=BATCH_TASK_ID,
            vm_node_agent_sku_id=self.test_node_agent_sku,
            os_family="4",
            batch_task_command_line="echo hello",
            azure_batch_conn_id=self.test_vm_conn_id,
            timeout=2,
        )
        self.operator_mutual_exclusive = AzureBatchOperator(
            task_id=TASK_ID,
            batch_pool_id=BATCH_POOL_ID,
            batch_pool_vm_size=BATCH_VM_SIZE,
            batch_job_id=BATCH_JOB_ID,
            batch_task_id=BATCH_TASK_ID,
            vm_publisher=self.test_vm_publisher,
            vm_offer=self.test_vm_offer,
            vm_sku=self.test_vm_sku,
            vm_node_agent_sku_id=self.test_node_agent_sku,
            os_family="5",
            sku_starts_with=self.test_vm_sku,
            batch_task_command_line="echo hello",
            azure_batch_conn_id=self.test_vm_conn_id,
            target_dedicated_nodes=1,
            timeout=2,
        )
        self.operator_invalid = AzureBatchOperator(
            task_id=TASK_ID,
            batch_pool_id=BATCH_POOL_ID,
            batch_pool_vm_size=BATCH_VM_SIZE,
            batch_job_id=BATCH_JOB_ID,
            batch_task_id=BATCH_TASK_ID,
            vm_node_agent_sku_id=self.test_node_agent_sku,
            batch_task_command_line="echo hello",
            azure_batch_conn_id=self.test_vm_conn_id,
            target_dedicated_nodes=1,
            timeout=2,
        )
        self.batch_client = mock_batch.return_value
        self.mock_instance = mock_hook.return_value
        assert self.batch_client == self.operator.hook.connection

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    def test_execute_without_failures(self, wait_mock):
        wait_mock.return_value = True  # No wait
        self.operator.execute(None)
        # test pool creation
        self.batch_client.pool.add.assert_called()
        self.batch_client.job.add.assert_called()
        self.batch_client.task.add.assert_called()

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    def test_execute_without_failures_2(self, wait_mock):
        wait_mock.return_value = True  # No wait
        self.operator2_pass.execute(None)
        # test pool creation
        self.batch_client.pool.add.assert_called()
        self.batch_client.job.add.assert_called()
        self.batch_client.task.add.assert_called()

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    def test_execute_with_failures(self, wait_mock):
        wait_mock.return_value = True  # No wait
        # Remove pool id
        self.operator.batch_pool_id = None

        # test that it raises
        with pytest.raises(AirflowException):
            self.operator.execute(None)

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    @mock.patch.object(AzureBatchOperator, "clean_up")
    def test_execute_with_cleaning(self, mock_clean, wait_mock):
        wait_mock.return_value = True  # No wait
        # Remove pool id
        self.operator.should_delete_job = True
        self.operator.execute(None)
        mock_clean.assert_called()
        mock_clean.assert_called_once_with(job_id=BATCH_JOB_ID)

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    def test_operator_fails(self, wait_mock):
        wait_mock.return_value = True
        with pytest.raises(AirflowException) as ctx:
            self.operator_fail.execute(None)
        assert (
            str(ctx.value) == "Either target_dedicated_nodes or enable_auto_scale must be set. None was set"
        )

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    def test_operator_fails_no_formula(self, wait_mock):
        wait_mock.return_value = True
        with pytest.raises(AirflowException) as ctx:
            self.operator2_no_formula.execute(None)
        assert str(ctx.value) == "The auto_scale_formula is required when enable_auto_scale is set"

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    def test_operator_fails_mutual_exclusive(self, wait_mock):
        wait_mock.return_value = True
        with pytest.raises(AirflowException) as ctx:
            self.operator_mutual_exclusive.execute(None)
        assert (
            str(ctx.value) == "Cloud service configuration and virtual machine configuration "
            "are mutually exclusive. You must specify either of os_family and"
            " vm_publisher"
        )

    @mock.patch.object(AzureBatchHook, "wait_for_all_node_state")
    def test_operator_fails_invalid_args(self, wait_mock):
        wait_mock.return_value = True
        with pytest.raises(AirflowException) as ctx:
            self.operator_invalid.execute(None)
        assert str(ctx.value) == "You must specify either vm_publisher or os_family"

    def test_cleaning_works(self):
        self.operator.clean_up(job_id="myjob")
        self.batch_client.job.delete.assert_called_once_with("myjob")
        self.operator.clean_up("mypool")
        self.batch_client.pool.delete.assert_called_once_with("mypool")
        self.operator.clean_up("mypool", "myjob")
        self.batch_client.job.delete.assert_called_with("myjob")
        self.batch_client.pool.delete.assert_called_with("mypool")
